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 * @Author: Bun 
 * @Date: 2020-03-06 18:49:11 
 * @Last Modified by: Bun
 * @Last Modified time: 2020-03-06 18:49:47
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<head> 
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    <script type="text/javascript">
        var iNum = 12, sTr = 'abc';
        var iNum02;  //undefined
        //var sTr = 'abc';
        var mM = null;
        /* 弹出弹窗 */
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        alert(iNum02);
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